DC-DC Constant Current Step-Down LED driver
■
Features :
DC/DC step-down converter
LDD-L
series
Constant current output: 300mA to 700mA
Wide input voltage: 9 ~ 36VDC
Wide output LED string voltage: 2 ~ 32VDC
High efficiency up to 95%
Built-in EMI filter, comply with EN55015 and FCC part15 without
additional input filter and capacitors
Built-in PWM dimming and remote ON/OFF control
Protections: Short circuit / Over temperature
Cooling by free air convection
Fully encapsulated with IP67 level for pin and wire style
Compact size
Low cost, high reliability
Suitable for driving illumination LED
3 years warranty
LDD-350L W
Blank : pin style
W
: wire style
S
: SMD style
SPECIFICATION
ORDER NO.
CURRENT RANGE
VOLTAGE RANGE
OUTPUT
LDD-300L
300mA
LDD-350L
350mA
LDD-500L
500mA
LDD-600L
600mA
LDD-700L
700mA
Note.4
2 ~ 32VDC for LDD-300~700L/LW ; 2~ 28VDC for LDD-300~700LS
CURRENT ACCURACY (Typ.)
±5%
at 24VDC input
RIPPLE & NOISE(max.)
Note.2
150mVp-p
40KHz ~ 1000KHz
SWITCHING FREQENCY
EXTERNAL CAPACITANCE LOAD (max.)
2.2uF
VOLTAGE RANGE
150mVp-p
150mVp-p
200mVp-p
200mVp-p
9 ~ 36VDC for LDD-300~700L/LW ; 9~ 32VDC for LDD-300~700LS
INPUT
95% at full load and 24VDC/36VDC input for LDD-300~700L/LW ; 95% at full load and 24VDC input for LDD-300~700LS
EFFICIENCY (max.)
350mA
500mA
600mA
700mA
Full load
Note.3
300mA
DC CURRENT
5mA
No load
FILTER
Capacitor
Leave open if not use
Power ON with dimming: DIM ~ -Vin >3.5 ~ 8VDC or open circuit
Power OFF : DIM ~ -Vin < 0.5VDC or short
100 ~ 1KHz
1mA at PWM dimming OFF and 24VDC input
Regulated at rated output current
Protection type: Can be continued, recovers automatically after fault condition is removed
Tj 150
℃
typically(IC1) detect on main control IC
Protection type : Shut down, recovers automatically after temperature goes down
-40 ~ + 85
℃
(Refer to derating curve)
20% ~ 90% RH non-condensing for LDD-300~700L/LW ; 20% ~ 85% RH non-condensing for LDD-300~700LS
-55 ~ +125
℃
, 10 ~ 95% RH
±
0.03% /
℃
10 ~ 500Hz, 2G 10min./1 cycle, period for 60min. each along X, Y, Z axes
Compliance to EN55015, FCC part 15 class B
Compliance to EN61000-4-2,3,4,6,8, light industry level, criteria A
2000Khrs min. MIL-HDBK-217F (25
℃
)
22.6*9.9*8.9mm or 0.89"*0.39"*0.35" inch (L*W*H) for LDD-300~700L/LW ; 25.4*10.5*9.3mm or 1"*0.4135"*0.366" inch (L*W*H) for LDD-300~700LS
LDD-300~700L:4g ; LDD-300~700LW:7.3g ; LDD-300~700LS :3.4g
Expoxy(UL94-V0) for LDD-300~700L/LW ; without potted for LDD-300~700LS
PWM
REMOTE ON/OFF
DIMMING
&
PWM FREQUENCY
ON/OFF
CONTROL QUIESCENT INPUT CURRENT
IN SHUTDOWN MODE(max.)
SHORT CIRCUIT
PROTECTION
OVER TEMPERATURE
WORKING TEMP.
WORKING HUMIDITY
STORAGE TEMP., HUMIDITY
ENVIRONMENT
TEMP. COEFFICIENT
VIBRATION
EMC EMISSION
EMC IMMUNITY
MTBF
DIMENSION
OTHERS
WEIGHT
POTTING MATERIAL
NOTE
OPERATING CASE TEMP. (max.)
100℃
EMC
1.All parameters are specified at normal input(24VDC), rated load, 25
℃
70% RH ambient.
2.Ripple & noise are measured at 20MHz by using a 12" twisted pair terminated with a 0.1uf capacitor.
3.Test condition: 24VDC input.
4.Output voltage will always step down by 3 volts from input DC voltage.
5.The output of LDD-L should not be connected to the input of the same unit or output from other sources.
File Name:LDD-L-SPEC 2015-08-24
DC-DC Constant Current Step-Down LED driver
■
Features :
DC/DC step-down converter
LDD-L
series
Constant current output: 1000mA to 1500mA
Wide input voltage: 6 ~ 36VDC
Wide output LED string voltage: 2 ~ 30VDC
High efficiency up to 95%
Built-in EMI filter, comply with EN55015 and FCC part15 without
additional input filter and capacitors
Built-in PWM +analog dimming and remote ON/OFF control
Protections: Short circuit
Cooling by free air convection
Fully encapsulated with IP67 level for pin and wire style
Non-potted, optional conformal coating for SMD style
(Order No.: LDD- 1000 LSC)
Compact size
Low cost, high reliability
Suitable for driving illumination LED
3 years warranty
LDD-1000L W
Blank : pin style
W
: wire style
S
: SMD style
SPECIFICATION
ORDER NO.
CURRENT RANGE
VOLTAGE RANGE
OUTPUT
LDD-1000L
1000mA
Note.4
2 ~ 30VDC
LDD-1200L
1200mA
LDD-1500L
1500mA
CURRENT ACCURACY (Typ.)
±5%
at 24VDC input
RIPPLE & NOISE(max.)
Note.2
1.5Vp-p
1000KHz
SWITCHING FREQENCY
EXTERNAL CAPACITANCE LOAD (max.)
2.2uF
VOLTAGE RANGE
6 ~ 36VDC
1.5Vp-p
1.5Vp-p
INPUT
95% at full load and 24VDC/36VDC input for LDD-1000~1500L/LW
EFFICIENCY (max.)
1160mA
Full load
Note.3
990mA
DC CURRENT
5mA
No load
FILTER
Capacitor
Leave open if not use
Power ON with dimming: DIM ~ -Vin >2.6 ~ 5.5VDC or open circuit
Power OFF : DIM ~ -Vin < 0.4VDC or short
100 ~ 500Hz
1mA at PWM dimming OFF and 24VDC input
Leave open if not use
Power ON with dimming : DIM ~ -Vin>0.5~2.5VDC or open circuit
Power OFF : DIM ~ -Vin<0.4VDC or short
Regulated at rated output current
1450mA
PWM
REMOTE ON/OFF
DIMMING
&
PWM FREQUENCY
ON/OFF
CONTROL QUIESCENT INPUT CURRENT
IN SHUTDOWN MODE(max.)
ANALOG
DIMMING
REMOTE ON / OFF
&
ON/OFF
CONTROL
PROTECTION SHORT CIRCUIT
WORKING TEMP.
WORKING HUMIDITY
STORAGE TEMP., HUMIDITY
ENVIRONMENT
TEMP. COEFFICIENT
VIBRATION
EMC EMISSION
EMC IMMUNITY
MTBF
DIMENSION
OTHERS
WEIGHT
POTTING MATERIAL
NOTE
Protection type: Can be continued, recovers automatically after fault condition is removed
-40 ~ + 71
℃
(Refer to derating curve)
20% ~ 90% RH non-condensing for LDD-1000~1500L/LW ; 20%~85% RH non-condensing for LDD-1000~1500LS
-55 ~ +125
℃
, 10 ~ 95% RH
±
0.03% /
℃
10 ~ 500Hz, 2G 10min./1 cycle, period for 60min. each along X, Y, Z axes
Compliance to EN55015, FCC part 15 class B
Compliance to EN61000-4-2,3,4,6,8, light industry level, criteria A
2000Khrs min. MIL-HDBK-217F (25
℃
)
31.8*20.3*12.2mm or 1.25"*0.8"*0.48" inch (L*W*H) for LDD-1000~1500L/LW ; 31.8*20.3*10.9mm or 1.25"*0.8"*0.43" inch (L*W*H) for LDD-1000~1500LS
LDD-1000~1500L:15.6g ; LDD-1000~1500LW:18g ; LDD-1000~1500LS:12.8g
Expoxy(UL94-V0) for LDD-1000~1500L/LW ; without potted for LDD-1000~1500LS
OPERATING CASE TEMP. (max.)
100℃
EMC
1.All parameters are specified at normal input(24VDC), rated load, 25
℃
70% RH ambient.
2.Ripple & noise are measured at 20MHz by using a 12" twisted pair terminated with a 0.1uf capacitor.
3.Test condition: 36VDC input.
4.Output voltage will always step down by 3 volts from input DC voltage.
5.The output of LDD-L should not be connected to the input of the same unit or output from other sources.
File Name:LDD-L-SPEC 2015-08-24
DC-DC Constant Current Step-Down LED driver
Mechanical Specification
Blank type(LDD- 300~700L):
9.9 [0.39]
1
3 4
2.54 [0.10]
3.81 [ 0.15 ]
LDD-L
Pin Configuration
Pin No.
Comment
DC Supply
ON/OFF and PWM Dimming
(Leave open if not used)
Don't connect to -Vout
LED - Connection
LED + Connection
series
Unit: mm (inch)
1
3
17.78 [0.7]
+Vin
PWM DIM
-Vin
-Vout
+Vout
4
22.6 [0.89]
SIDE
VIEW
BOTTOM
VIEW
5
6
6
5
8.9 [0.35]
7.62 [0.30]
ψ0.60
NOTE: Pin tolerance
±
0.05mm
W type(LDD - 300~700LW):
9.9 [0.39]
1
3
4
8.9 [0.35]
Pin No.
1
Comment
4
3
BOTTOM
VIEW
5
±
2mm
100
±
10mm
SIDE
VIEW
4
5
6
5
5
6
+Vin
DC Supply
(Red)
PWM DIM ON/OFF and PWM Dimming
(Leave open if not used)
(White)
-Vin
Don't connect to -Vout
(Black)
-Vout
LED - Connection
(Blue)
+Vout
LED + Connection
(Yellow)
NOTE:
All wires UL3385 22AWG
S type(LDD - 300~700LS):
17.78 [0.70]
0.6 [0.023] 2.54 [0.10]
22.6 [ 0.89]
Pin No.
1
+Vin
+Vout
-Vout
PWM DIM
-Vin
N.C
Comment
DC Supply
LED + Connection
LED - Connection
ON/OFF and PWM Dimming
(Leave open if not used)
Don't connect to -Vout
LED - Connection
1
BOTTOM VIEW
16
14
7 8
10 9
A
0.65 [0.02]
7,8
9,10
0.25 [0.01]
14
16
SIDE VIEW
A
10.50 [0.41]
9.3 [0.36]
others
25.4 [1.00]
12.8 [0.50]
Recommended PCB layout (for LDD-300~700LS)
2.54mm
2.54mm
16
14
TOP VIEW
1
7
8
10
9
14.63[0.58]
13.1[0.52]
1.54[0.06]
2.54[0.1]
1.54[0.06]
File Name:LDD-L-SPEC 2015-08-24
DC-DC Constant Current Step-Down LED driver
Mechanical Specification
Blank type(LDD- 1000~1500L):
20.3 [0.80]
LDD-L
Pin Configuration
series
Unit: mm (inch)
2.06 [0.08]
Pin No.
1,2
11,12
31.8 [1.25]
Comment
Don't connect to -Vout
LED - Connection
LED + Connection
24
23
21
BOTTOM
VI EW
1
2
-Vin
-Vout
+Vout
SIDE
3.81 [0.15]
13,14
21
23,24
VI EW
PWM +analog ON/OFF and PWM / analog Dimming
(Leave open if not used)
DIM
+Vin
DC Supply
14
13
11
12
15.24 [0.60]
2.54 [0.1]
ψ0.60
12.2 [0.48]
NOTE: Pin tolerance
±
0.05mm
W type(LDD - 1000~1500LW):
20.3 [0.80]
5
±
2mm 100
±
10mm
12.2
[0.48]
Pin No.
23
21
BOTTOM
VIEW
2
2
21
31.8 [1.25]
Comment
Don't connect to -Vout
LED - Connection
LED + Connection
2
SIDE
-Vin
(Black)
-Vout
(Blue)
+Vout
(Yellow)
11
14
21
23
VI EW
14
11
11
PWM +analog ON/OFF and PWM / analog Dimming
(Leave open if not used)
DIM (White)
+Vin
(Red)
DC Supply
NOTE:
All wires UL3385 22AWG
S type(LDD - 1000~1500LS):
0.25[0.010]
1.5[0.059]
20.3 [0.80]
24
23
1
2
2.0 [0.08]
25.4 [1.00]
Pin No.
1,2
11,12
13,14
-Vin
-Vout
+Vout
Comment
Don't connect to -Vout
LED - Connection
LED + Connection
31.8 [1.25]
0.5 [0.02]
21
BOTTOM
VIEW
2.54 [0.10]
21
23,24
others
PWM +analog ON/OFF and PWM / analog Dimming
(Leave open if not used)
DIM
+Vin
N.C
DC Supply
No connection
1.0 [0.04]
14
13
11
12
10.9 [0.43]
11.4 [0.45]
Recommended PCB layout (for LDD-1000~1500LS)
2.54mm
2.54mm
24 23
21
14 13
26.40[1.04]
24.37[0.96]
TOP VIEW
1 2
11 12
2.03[0.08]
2.54[0.1]
1.5[0.06]
File Name:LDD-L-SPEC 2015-08-24
DC-DC Constant Current Step-Down LED driver
LDD-L
Derating Curve
series
Reflow Soldering Curve (for LDD-300~1500LS)
240
220
Peak. Temp 240℃
10 sec. Max.
220℃
Temperature (
℃
)
150
100
50
LOAD (%)
60 sec. Max.
(>220
℃
)
100
75
50
25
71
℃
for 600~1500mA
85
℃
for
300~500mA
0
Time(sec.)
Remark : The curve applies only to the " Hot Air Reflow Soldering"
-40
0
25
50
71
85
100
PWM Dimming Control (for 300~1500mA)
Io
Adjustment by PWM signal :
+Vin
+Vout
1st LED
Ta (
℃
)
300 ~ 700mA :
H: > 3.5~8VDC or open circuit
L: < 0.5VDC or short
Last LED
Dimming
PWM
H
L
LDD-300~1500L
1000 ~ 1500mA :
H: > 2.6~5.5VDC or open circuit
L: < 0.4VDC or short
-Vin
-Vout
PWM
Signal
{
{
H(5V)
OFF
ON
ON
ON
◎
During PWM dimming operation, the output current will change to
PWM style.
100
Tol :
±
3%(Typ.)
75
L(0V)
OFF
100~1KHz
OFF
PWM Frequency :
300~700mA : 100~ 1KHz
1000~ 1500mA : 100~500Hz
I
out(%
)
Max
50
25
Output
Current
0
0
25
50
75
100
Duty Cycle (%)
Analog Dimming Control for 1000~ 1500mA only
Io
Adjustment by DC voltage :
+Vin
+Vout
1st LED
Dimming
0.5~2.5VDC
LDD-1000~1500L
Last LED
-Vin
24Vdc input
120%
100%
80%
1500 mA
-Vout
Iout
60%
40%
20%
0%
1200 mA
1000 mA
3.0
2.9
2.8
2.7
2.6
2.5
2.4
2.3
2.2
2.1
2.0
1.9
1.8
1.7
1.6
1.5
1.4
1.3
1.2
1.1
1.0
0.9
0.8
0.7
0.6
0.5
0.4
0.3
0.2
0.1
0
Voltage control(0.5~2.5VDC)
File Name:LDD-L-SPEC 2015-08-24
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